Valve.



No. 660,400. Patented 001. 23, I900. n. .1. SMITH.

VALVE.

(Application filed Oct. 16, 1899.)

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(No Model.)

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Nd. 560,400. Patented not; 23, I900.

R. J-. SMITH.

VALVE.

(Application flied. Oct. 16, 1899.) nomdem 3 Sheets-Sheet 3.

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UNITED STATES PATENT UFFICE.

RALPH JOHN SMITH, OF SUNDERLAND, ENGLAND.

VALVE.

SPECIFICATION forming part of Letters Patent No. 660,400, dated October23, 1900.

Application filed October 16, 1899. Serial No. 733,799. (No model.)

To all whom it may concern.-

Be it known that I, RALPH JOHN SMITH, a subject of the Queen of GreatBritain, residing at- Pier Engine Works, South Dock, Sunderland, in thecounty of Durham, England, have invented certain new and usefulImprovements in Emergency Stop -Valves for SteanrBoilers, Fluid-Pipes,and the Like, of which the following is a specification.

This invention relates to automaticallyclosed flap or similar valveslocated in steampipes or other working fluid-passages and designed to beclosed in emergencies by the simple release of a catch or holdingdevice.

The object of my invention is to improve emergency-valves of thecharacter or type referred to; and to accomplish this object myinvention involves the features of construction and the combination orarrangement ofparts hereinafter described and claimed, reference beingmade to the accompanying drawings, in which- Figure l is asectionalelevation through line a a of Fig. 2; Fig.2, a longitudinalsection; Fig. 3, a plan of a valve-carrier or connecting length ofpiping to be fitted to a steam-supply or a fluid-passage pipe foremergency purposes, as before explained.

A is a valve of the flap or clock kind, mounted on, say, a squareportion of the axle B, which is carried by the shoulders O O of theshort length of pipe D, within which shoulders the axle has free turningmotion. The axle extends from outside the pipe D and has affixed to it aweighted lever E, the weight F of which has an orifice, recess, or holein one face of sufficient depth for retaining the free end of aspring-aotioned bolt or catch Gin the hole, which bolt is otherwise heldby the bracket-cheeks H H. The outer end I of this catch-bolt G is forthe connection of a chain or cord which singly or by branch lines can becarried to any distant part for ready action to Withdraw the bolt G forthe release of the valve A, due to the fall of the weight F, whichaccelerates and insures the fall and puts the valve-A in contact withthe seating J, the facing edge of which projects slightly inward forperfect fit.

I purpose using the strap K, with a cen- ,but the instant the bolt G iswithdrawn the weight and valve fall to the position shown in dottedlines and effectually and instantly shut off the flow.

My invention is useful for many purposes, but is particularly designedfor steamships, in which the passage of steam or working fluid to theengine can be cutoff by a person in charge from a position on the bridgeor from the cabin in cases of extreme danger and before the engine-roomattendant could cause the main shut-off valve to operate.

What I claim, and desire to secure by Letters Patent, is-

The combination Witha pipe or passage for a working fluid, a swingingvalve arranged therein, and a rocking axle carrying the valve andprojecting tothe exterior of the pipe or passage, of a lever secured tothe projecting end of the axle and having a weight at its outer endconstructed with an orifice or recess, a bolt-supporting bracket, aspringpressed bolt supported by and movable lengthwise in said brackettoengage and disengage the orifice or recess in the weight, a strapattached to the pipe or passage and projecting in proximity to one endof said axle, and an adjustable pivot carried by said strap andpivot-ally engaging one end of the axle, i

substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses'.

RALPH JOHN SMITH.

Witnesses:

ALBERT FRANCIS NEWTON, GEORGE BELL SMITH.

